Needle-lever bearing.



No; 822,884. PTTB JE 5, 1906.

' i' E; fw, mst. y XBEQLBV LEVER BEARING, PlLTEmEB m. 1904. BSI'I'BB l0?. S1. 1 905.

@House v Daunte u. nouer, OF sr.

sra IAL SEWING MACHINE LOUIS. MISSOURI, AssIGN-OR TO UNION COMPANY,

OF CHICAGO, ILLIN( HS' A CORPORATION OF ILLINOIS. y

NEEDLE-LEVER BEARING.

Specication of Letters Patent. Application tiled April 7, 1904. Renewed Nov. 21,

Patented June 5,V 1906.

1905. Serial No. 283,457.

To fr/ZZ whom t may concern:

Be it known that I, DANIEL W. Conor, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Needie-Lever Bearings, of whlch the following is a description, reference being had to the accompanying drawings and to the letters of reference marked thereon.

My invention relates toan improvement in needle-lever bearings the object being to provide an arrangement capable of the greatest eliiciency on highspeed machines and one which shall be contmually lubricated as to all its bearing parts and not likely to Wear out readily.

The invention consists, primarily, in the combination, with the needle-lever hub, of the needle-lever stud having a chamber for the rece tion of the lubricant and a series of circum erential openings to ermit the escape of the oil to the inner perip ery of the hub.

Secondly, the invention consists in the combination, with the needle-lever hub, of the needle-lever stud having a chamber for the reception of the lubricant and a series of circumferential openings .to permit the esos e of the YVoil to the vinner periphery of the hu said needle-lever hub having a oove registering with the top oil-holes In t e stud. Y

' Finally, the invention consists in the matters hereinafter described, and referred to in the appended claims.

In t 1e accompanying drawingsmhich illustrate the invention, Figure 1 is a iront elevation of a portion of the needle-lever of a sewing-machine with the hub and stud in section. Fi 2 isa a side elevation of the needlelever stu( Fig. 3 is a longitudinal section of the needle-lever stud.

In the drawings, A represents a portion of the needle-lever of a servirle-machine having the'usual hub B, which has its ben-ring ou the needle-lever stud C, which is screwed Into the ooseneck of the machine in the usual Way. he stud C is hollow, forming an oil-receiving chamber D, the outer end of which is normally closed br a threaded lug E, the plug being remove when the c amber is to be for sewing-machines, Y

It will be understood I claim, and' desire to secure by Lot-tors cleaned. The stud is provided with an oilfeed opening F, leadin to the chamber l).

A series of ciroum erential holes G are formed in the needle-lever stud, and thc top inner periphery of the hub is groovod, os at H, to register with the top series of holes From this groove holes I ma lead to the outside, thus allowing escape oiy air when the oil is forced in. The groove H iis of sulcicnt Width,so that in the oscillation of the noodlelever the groove always registers with the oilholes. ,By this arrangement a thoroughlveffective Way of lubricating the bearing of t Ie needle-lever is provided, and the trouble which at present exists on high-spoed Innchines by the liability of Wear of the noodlolever on the pivot-stud is avoided.

that while I have shown the invention as applied in connection with needle-lever bearings said invention may be applied to other uses.

Having thus described my invention, xxl-hat ,hlt-

ent, is

l. The combination with the noodle-lover hub, of the needle-lever stud having a chomber for the reception of th:` lubricant and a series of openinvs leading from tho chamber to the inner wallof the hub, said noodle-lever hub having a groove constantly registering with the top oil-holes in the stud; substantially as described.

2. The combination with the noodle-lover hub, ofthe needle-lever stud horiuga chamber for the reception ol ries of openings loading the inner wall of the hub, end opening, with a plug for closing the somo, and having indepen ent oil-inlet ond air-outlet openings; suhsfantialhv as described.

from the chambor to 3. A ivo't-bearin stud, having a control hollow c amber, and openings lending thorefrom, and a part to be lubricated surrounding the same, having an Inner longitudinal groove to constantly resist-er wit h the top sot of openings; substantie l'y as described.

4. The combination with a hub, of a 'supporting-boerin having a chamber for; the rooeption of the ubricant, and provided with said stud having outhe lubricant and :I so- Q d A 822,884"

an oilin.'.et and a series of openings leading from the chamber to the inner wall of the hub 1o from the chamber to the inner wall ofthe hub and an independentameca 'e opening conA and means independent of the oil-inlet to .neoted with theo enin int Ie'stud.

.permit the esca e of air from the ylubrioant- In testimony w ereo I affix my signature chamber when t 1e oil is forced intoit.` I inpresence of two Witnesses.

5. The' combination with a hub, of a sup` 4 DANIEL COREY. porting-bearing having a chamber forwthe re- Witnesses': caption of the lubricant, and provided With ERNEST A. MUELLER, an oil-inlet and a series of openings leading A. E. RITER. 

